{"data":{"id":"us/14-cfr-25.303","jurisdiction":"us","citation":"14 CFR 25.303","heading":"Factor of safety.","body":"Unless otherwise specified, a factor of safety of 1.5 must be applied to the prescribed limit load which are considered external loads on the structure. When a loading condition is prescribed in terms of ultimate loads, a factor of safety need not be applied unless otherwise specified.","path":["Title 14—Aeronautics and Space","CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER C—AIRCRAFT","PART 25—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES","Subpart C—Structure"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-14.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:20Z","sha256":"b2201fbcfac126d9327525597fb08095930216e365b46c910928502700333797","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-25.302","next":"us/14-cfr-25.305"},"notice":"GroundRules: Original legal text. Not legal advice."}